Explanation/Reference:
Explanation:
A: All new user accounts in contoso.com must have a user principal name (UPN) that ends with proseware.com C: Proseware needs to trust Contoso E: All new users hired at Contoso must have a user account in contoso.com and an Exchange Server mailbox in proseware.com Use the New-Mailbox cmdlet to create a user in Active Directory and mailbox-enable this new user.
The LinkedMasterAccount parameter specifies the master account in the forest where the user account resides. The master account is the account to link the mailbox to.
The master account grants access to the mailbox. This parameter is required only if you're creating a linked mailbox.
A linked mailbox is a mailbox that's associated with an external account. The resource forest scenario is an example of a situation in which you would want to associate a mailbox with an external account. In a resource forest scenario, user objects in the Exchange forest have mailboxes, but the user objects are disabled for logon. You must associate these mailbox objects in the Exchange forest with enabled user objects in the external accounts forest.